US4278031A - Precision adjustable table - Google Patents

Precision adjustable table Download PDF

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Publication number
US4278031A
US4278031A US06/022,780 US2278079A US4278031A US 4278031 A US4278031 A US 4278031A US 2278079 A US2278079 A US 2278079A US 4278031 A US4278031 A US 4278031A
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US
United States
Prior art keywords
base
joint
support
central point
support structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/022,780
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English (en)
Inventor
Holmer Dangschat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Johannes Heidenhain GmbH
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Dr Johannes Heidenhain GmbH
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Publication date
Application filed by Dr Johannes Heidenhain GmbH filed Critical Dr Johannes Heidenhain GmbH
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B5/00—Adjusting position or attitude, e.g. level, of instruments or other apparatus, or of parts thereof; Compensating for the effects of tilting or acceleration, e.g. for optical apparatus

Definitions

  • the present invention relates to an adjustable table which is tiltably positioned by adjusting elements over a fixed base, and particularly to an adjustable table for use with precision measuring devices.
  • the present invention is directed to an adjustable table that substantially avoids the aforementioned disadvantages of the prior art.
  • three similar adjusting structures are positioned on the periphery of an adjustable table symmetrically with respect to a central point of the table.
  • Each of these adjusting structures is connected between the fixed base and the adjustable table by means of a two dimensional joint at one end having a tangential axis of rotation, and by means of a three dimensional joint at the other end.
  • the terms two dimensional and three dimensional are used to denote joints which permit relative movement in two and three dimensions, respectively.
  • this adjustable table undergoes substantially no decentering during changes of temperature or adjustment. Further advantages are that the adjusting structures of this invention are not subject to point contact wear and that they permit reproducible positioning of the table with a statically determined rest position and high rigidity.
  • One preferred embodiment of the invention includes a leaf spring mounted in the base plate of the adjusting structure, which spring is also firmly mounted to the fixed base and is aligned tangentially to a circle centered at the central point of the table.
  • a second preferred embodiment includes a pair of spheres mounted in the base plate of the adjusting structure so as to fit into corresponding tangentially aligned conical recesses in the base.
  • FIG. 1b is a top view of the table of FIG. 1a.
  • FIG. 1a is a cross-sectional view of an adjusting structure of the table of FIG. 1a taken along a radius of the table.
  • FIG. 2b is a cross-sectional view taken along line 2b--2b of FIG. 2a.
  • FIG. 3a is a cross-sectional view of a portion of a second preferred embodiment of the adjusting structure of this invention.
  • FIG. 4b is a cross-sectional view taken along 4b--4b of FIG. 4a.
  • FIGS. 1a and 1b show an adjustable table 2 embodying the present invention.
  • the table 2 includes three similar adjusting structures 1 mounted on the periphery of the table in rotationally symmetric positions. As shown in FIGS. 2a and 2b, in which only a single adjusting structure 1 is represented, these three adjusting structures 1 are each connected to a fixed base 3 by means of a tangentially arranged leaf spring 4 which acts as a two dimensional joint having an axis of rotation tangential to a circle centered at the center of the table 2. Each adjusting structure is mounted to the adjustable table 2 by means of a three dimensional joint 5,6 formed by a convex spherical surface 5, which fits into a correspondingly shaped concave recess 6 in the adjustable table 2.
  • the adjusting structure 1 includes a carrier body 7 in which is formed a centrally arranged prismatic groove 8, which is bounded by a base plate 9.
  • a base plate 9 On the outer surface 10 of this base plate 9 the leaf spring 4 is mounted parallel to the prismatic groove 8.
  • the spring 4 is aligned in the tangential direction and is firmly mounted to the fixed base 3.
  • a threaded spindle 12 On the inner surface 11 of the base plate 9 there is mounted a threaded spindle 12 which is aligned parallel to the prismatic groove 8.
  • This spindle 12 engages a corresponding threaded bore 13 of a cylindrical setting bolt 14, the outer surface 15 of which is held tangent to the surfaces 16 of the prismatic groove 8 without play, and the free end of which is provided with the convex surface 5, which engages into the corresponding shaped concave recess 6 of the adjustable table 2.
  • a hexagonally shaped recess 17 is provided in the convex surface 5 of the setting bolt 14 for the adjustment of the adjustable table 2.
  • This recess 17 is sized to accept an adjusting hexagonal wrench (or key) 18, which engages the recess 17 through an opening 19 formed in the adjustable table 2.
  • the outer surface 15 of the setting bolt 14 is pressed by means of a second leaf spring 20 onto the surfaces 16 of the prismatic groove 8.
  • FIGS. 3a and 3b represent two partial views of a second preferred embodiment of the invention, in which two spherical elements 4' are secured in the outer surface 10' of the base plate 9' of the carrier body 7'. These spherical elements 4' fit into corresponding conical recesses 21, which are arranged along the tangential direction in the fixed base 3' and which cooperate with the spherical elements 4' to form a two dimensional joint having a tangential axis of rotation.
  • FIGS. 4a and 4b A third preferred embodiment of a two dimensional joint having a tangential axis of rotation is shown in FIGS. 4a and 4b, in which a cylindrical pin 4" is secured in the outer surface 10" of the base plate 9" of the carrier body 7". This pin 4" fits into a corresponding prismatic recess 22, which is arranged along the tangential direction in the fixed base 3".
  • the adjustable table of this invention eliminates the need for point contacts and provides high rigidity, low surface pressure and low wear. Neither temperature changes nor adjustment results in decentering of the adjustable table 2. Furthermore, a reproducible positioning of the table 2 with a statically determined rest position is ensured, since substantially no plastic deformation occurs at contact points.
  • the three adjusting structures can be mounted between the table and the base with a two dimensional joint having a tangential axis of rotation between the adjusting structure and the table and a three dimensional joint between the adjusting structure and the base.
  • Such changes and modifications can be made without departing from the spirit and the scope of the present invention, and without diminishing its attendant advantages. It is, therefore, intended that such changes and modifications be covered by the following claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Machine Tool Units (AREA)
  • Details Of Measuring And Other Instruments (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
US06/022,780 1978-03-29 1979-03-22 Precision adjustable table Expired - Lifetime US4278031A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2813407 1978-03-29
DE19782813407 DE2813407A1 (de) 1978-03-29 1978-03-29 Einstellbarer tisch

Publications (1)

Publication Number Publication Date
US4278031A true US4278031A (en) 1981-07-14

Family

ID=6035612

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/022,780 Expired - Lifetime US4278031A (en) 1978-03-29 1979-03-22 Precision adjustable table

Country Status (7)

Country Link
US (1) US4278031A (US20020095090A1-20020718-M00002.png)
JP (1) JPS54133365A (US20020095090A1-20020718-M00002.png)
CH (1) CH639483A5 (US20020095090A1-20020718-M00002.png)
DE (1) DE2813407A1 (US20020095090A1-20020718-M00002.png)
FR (1) FR2420940A1 (US20020095090A1-20020718-M00002.png)
GB (1) GB2018171B (US20020095090A1-20020718-M00002.png)
IT (1) IT1124031B (US20020095090A1-20020718-M00002.png)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448385A (en) * 1981-05-12 1984-05-15 Honeywell Inc. Stable alignment mechanism for laser mirrors
US4580756A (en) * 1983-08-22 1986-04-08 Kei Mori Balancing device
US4690365A (en) * 1986-05-16 1987-09-01 Grumman Aerospace Corporation Jack stud
US5111834A (en) * 1991-03-08 1992-05-12 Brien Gene E O Paint roller flushing stand
US5421278A (en) * 1993-10-05 1995-06-06 Ideal Equipment Company, Ltd. Semi-automated sewing station
US5848501A (en) * 1992-07-31 1998-12-15 Wenger Corporation Modular portable system
US6173661B1 (en) * 1999-09-03 2001-01-16 Emhart Glass S.A. Dead plate assembly for I.S. machine
US20070044555A1 (en) * 2005-08-26 2007-03-01 Klaus-Joachim Busch Device for performing vibration measurements on a test part having at least one rotor, especially a transmission
US20100180539A1 (en) * 2003-10-10 2010-07-22 Gary Meyer Raised floor access panel retrofit method
US20120032055A1 (en) * 2010-08-09 2012-02-09 Sigma Space Corporation Directionally adjustable mount with locking parts and methods
US20120164929A1 (en) * 2010-12-27 2012-06-28 Gary Meyer Directional flow raised floor air-grate

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469982A1 (fr) * 1979-11-26 1981-05-29 Mecalix Dispositif de positionnement relatif de deux pieces
DE3635884A1 (de) * 1986-10-22 1988-05-05 Heidenhain Gmbh Dr Johannes Ein auf einem festen grundkoerper einstellbar gelagerter tisch
US5065110A (en) * 1990-05-02 1991-11-12 Teledyne Mec Feed-forward amplifier including phase correction
US7656236B2 (en) 2007-05-15 2010-02-02 Teledyne Wireless, Llc Noise canceling technique for frequency synthesizer
US8179045B2 (en) 2008-04-22 2012-05-15 Teledyne Wireless, Llc Slow wave structure having offset projections comprised of a metal-dielectric composite stack
US9202660B2 (en) 2013-03-13 2015-12-01 Teledyne Wireless, Llc Asymmetrical slow wave structures to eliminate backward wave oscillations in wideband traveling wave tubes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440211A (en) * 1946-04-19 1948-04-20 Charles O Rothweiler Leveling device
US2461190A (en) * 1945-08-04 1949-02-08 Eastman Kodak Co Adjustable mount for optical elements
SU152069A1 (ru) * 1961-12-06 1962-11-30 Р.А. Нугаев Устройство дл установки в рабочее положение приборов при наклонных опорных поверхност х креплени
US3517904A (en) * 1967-06-30 1970-06-30 Comp Generale Electricite Object positioning support allowing for multiple displacements
DE2248535A1 (de) * 1972-10-03 1974-04-11 Bjuro Wsajmosamenjajemosti W M Tisch zum pruefteilauflegen in geraeten zur kontrolle linearer groessen
US3931947A (en) * 1974-04-11 1976-01-13 Essilor International (Compagnie Generale D'optique) Adjustable base, notably for topometry apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190214912A (en) 1902-07-04 1903-05-14 John Hardwick Fulford Improvements relating to Levels and other Surveying Instruments
US3524261A (en) * 1968-08-19 1970-08-18 Standard Gage Co Inc Work supporting table for coaxial comparators
DE2543564A1 (de) * 1975-09-30 1977-04-07 Feinpruef Feinmess U Pruefgera Tisch, insbesondere zur verwendung fuer messeinrichtungen
DE2608501A1 (de) * 1976-03-02 1977-09-08 Freund H Mora Messgeraete Hoehenmess- und anreissgeraet mit druckluftlagerung zwischen dem geraetefuss und der richtplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461190A (en) * 1945-08-04 1949-02-08 Eastman Kodak Co Adjustable mount for optical elements
US2440211A (en) * 1946-04-19 1948-04-20 Charles O Rothweiler Leveling device
SU152069A1 (ru) * 1961-12-06 1962-11-30 Р.А. Нугаев Устройство дл установки в рабочее положение приборов при наклонных опорных поверхност х креплени
US3517904A (en) * 1967-06-30 1970-06-30 Comp Generale Electricite Object positioning support allowing for multiple displacements
DE2248535A1 (de) * 1972-10-03 1974-04-11 Bjuro Wsajmosamenjajemosti W M Tisch zum pruefteilauflegen in geraeten zur kontrolle linearer groessen
US3931947A (en) * 1974-04-11 1976-01-13 Essilor International (Compagnie Generale D'optique) Adjustable base, notably for topometry apparatus

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448385A (en) * 1981-05-12 1984-05-15 Honeywell Inc. Stable alignment mechanism for laser mirrors
US4580756A (en) * 1983-08-22 1986-04-08 Kei Mori Balancing device
US4690365A (en) * 1986-05-16 1987-09-01 Grumman Aerospace Corporation Jack stud
US5111834A (en) * 1991-03-08 1992-05-12 Brien Gene E O Paint roller flushing stand
US5848501A (en) * 1992-07-31 1998-12-15 Wenger Corporation Modular portable system
US6106186A (en) * 1992-07-31 2000-08-22 Wenger Corporation Modular portable stage system
US5421278A (en) * 1993-10-05 1995-06-06 Ideal Equipment Company, Ltd. Semi-automated sewing station
US6173661B1 (en) * 1999-09-03 2001-01-16 Emhart Glass S.A. Dead plate assembly for I.S. machine
US7779587B1 (en) * 2003-10-10 2010-08-24 Gary Meyer Raised floor access panel
US20100180539A1 (en) * 2003-10-10 2010-07-22 Gary Meyer Raised floor access panel retrofit method
US20100180520A1 (en) * 2003-10-10 2010-07-22 Gary Meyer Raised floor access panel with integrated leveler
US8056300B2 (en) * 2003-10-10 2011-11-15 Gary Meyer Raised floor access panel retrofit method
US8091302B2 (en) * 2003-10-10 2012-01-10 Gary Meyer Raised floor access panel with integrated leveler
US7523668B2 (en) * 2005-08-26 2009-04-28 Thyssenkrupp Egm Gmbh Device for performing vibration measurements on a test part having at least one rotor, especially a transmission
US20070044555A1 (en) * 2005-08-26 2007-03-01 Klaus-Joachim Busch Device for performing vibration measurements on a test part having at least one rotor, especially a transmission
US20120032055A1 (en) * 2010-08-09 2012-02-09 Sigma Space Corporation Directionally adjustable mount with locking parts and methods
US8366063B2 (en) * 2010-08-09 2013-02-05 Sigma Space Corporation Directionally adjustable mount with locking parts and methods
US20120164929A1 (en) * 2010-12-27 2012-06-28 Gary Meyer Directional flow raised floor air-grate
US8641492B2 (en) * 2010-12-27 2014-02-04 Gary Meyer Directional flow raised floor air-grate

Also Published As

Publication number Publication date
DE2813407A1 (de) 1979-10-04
JPS6228879B2 (US20020095090A1-20020718-M00002.png) 1987-06-23
FR2420940B1 (US20020095090A1-20020718-M00002.png) 1983-05-20
DE2813407C2 (US20020095090A1-20020718-M00002.png) 1987-03-05
GB2018171B (en) 1982-05-06
GB2018171A (en) 1979-10-17
IT1124031B (it) 1986-05-07
CH639483A5 (de) 1983-11-15
JPS54133365A (en) 1979-10-17
IT7912531A0 (it) 1979-03-28
FR2420940A1 (fr) 1979-10-26

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